Science

NASA's Voyager 1 closes in on a light-day in interstellar space for a new distance record

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Briefings

NASA's Voyager 1 spacecraft is approaching a distance of one light-day from Earth, marking a new record for humanity's first object to travel this far in interstellar space. This milestone occurs as the probe continues its journey deep into the cosmos, with the specific distance being the primary metric of its achievement.

Key points

• Voyager 1 is the first human-made object to reach one light-day from Earth.
• The distance is approximately 9.46 trillion kilometers (5.87 billion miles) as of the latest measurement.

Context

Voyager 1 is a NASA probe launched in 1977 that has traveled through the solar system and into interstellar space. It is currently the only spacecraft in the solar system to have left the heliosphere, making this distance record significant for human exploration history.

Limitations

The distance of one light-day is a snapshot measurement from November 2026. Future progress depends on continued propulsion and navigation, and the probe's trajectory may change as it navigates the interstellar medium.

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